Neco Model Questions Vol1 2025 Chemistry Question 1
Practice practical question 1 from the 2025 Neco Model Questions Vol1 Chemistry examination. This question covers Atomic Structure, Relative atomic mass determination, Stoichiometry .
A student carried out an experiment to determine the relative atomic mass of magnesium by converting a known mass of magnesium ribbon into magnesium oxide. Procedure (summarised): 1. A clean, dry crucible with lid was weighed and the mass recorded as 0.200 g. 2. A clean piece of magnesium ribbon was cut, dried and weighed together with the crucible; the combined mass was 0.700 g. 3. The crucible was heated strongly in a Bunsen‑flame until the magnesium ceased to glow and the mass became constant. The product obtained was magnesium oxide (MgO). 4. After cooling, the crucible with its lid was weighed again; the combined mass was 0.842 g. 5. The atomic mass of oxygen is taken as 16.00 g mol⁻¹. Using the data above, answer the following questions.
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This is Neco Model Questions Vol1 2025 Chemistry Question 1. It is one of the practical questions from the 2025 Neco Model Questions Vol1 Chemistry examination.
The question covers Atomic Structure, Relative atomic mass determination, Stoichiometry .
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